Cool sources of information
http://www.finviz.com/futures_charts.ashx
This site gives market data down to a five minuet interval for all the major commodities (not that such a level of accuracy is useful given that the precision of our trading software is akin to using a sledge hammer to preform heart surgery). It hosts data from as far back early 2008, fantastic for viewing seasonal trends across commodities. It is easy to navigate and is aesthetically appealing. It’s certain to entertain.